Pentaho的數據集成SQL連接

Question

我使用Pentaho的數據集成，我試圖通過MySQL的連接到我的數據庫，但是當我做我得到這個錯誤.....

Error connecting to database [devdb2] : org.pentaho.di.core.exception.KettleDatabaseException: 
Error occured while trying to connect to the database 

Exception while loading class 
org.gjt.mm.mysql.Driver 


org.pentaho.di.core.exception.KettleDatabaseException: 
Error occured while trying to connect to the database 

Exception while loading class 
org.gjt.mm.mysql.Driver 


    at org.pentaho.di.core.database.Database.normalConnect(Database.java:368) 
    at org.pentaho.di.core.database.Database.connect(Database.java:317) 
    at org.pentaho.di.core.database.Database.connect(Database.java:279) 
    at org.pentaho.di.core.database.Database.connect(Database.java:269) 
    at org.pentaho.di.core.database.DatabaseFactory.getConnectionTestReport(DatabaseFactory.java:86) 
    at org.pentaho.di.core.database.DatabaseMeta.testConnection(DatabaseMeta.java:2464) 
    at org.pentaho.ui.database.event.DataHandler.testDatabaseConnection(DataHandler.java:533) 
    at sun.reflect.GeneratedMethodAccessor55.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:329) 
    at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:139) 
    at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:123) 
    at org.pentaho.ui.xul.swt.tags.SwtButton.access$500(SwtButton.java:26) 
    at org.pentaho.ui.xul.swt.tags.SwtButton$4.widgetSelected(SwtButton.java:119) 
    at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source) 
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source) 
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) 
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source) 
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source) 
    at org.eclipse.jface.window.Window.runEventLoop(Window.java:820) 
    at org.eclipse.jface.window.Window.open(Window.java:796) 
    at org.pentaho.ui.xul.swt.tags.SwtDialog.show(SwtDialog.java:378) 
    at org.pentaho.ui.xul.swt.tags.SwtDialog.show(SwtDialog.java:304) 
    at org.pentaho.di.ui.core.database.dialog.XulDatabaseDialog.open(XulDatabaseDialog.java:115) 
    at org.pentaho.di.ui.core.database.dialog.DatabaseDialog.open(DatabaseDialog.java:62) 
    at org.pentaho.di.ui.spoon.delegates.SpoonDBDelegate.newConnection(SpoonDBDelegate.java:493) 
    at org.pentaho.di.ui.spoon.delegates.SpoonDBDelegate.newConnection(SpoonDBDelegate.java:478) 
    at org.pentaho.di.ui.spoon.Spoon.newConnection(Spoon.java:7770) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.pentaho.ui.xul.impl.AbstractXulDomContainer.invoke(AbstractXulDomContainer.java:329) 
    at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:139) 
    at org.pentaho.ui.xul.impl.AbstractXulComponent.invoke(AbstractXulComponent.java:123) 
    at org.pentaho.ui.xul.swt.tags.SwtMenuitem.access$100(SwtMenuitem.java:27) 
    at org.pentaho.ui.xul.swt.tags.SwtMenuitem$1.widgetSelected(SwtMenuitem.java:77) 
    at org.eclipse.swt.widgets.TypedListener.handleEvent(Unknown Source) 
    at org.eclipse.swt.widgets.EventTable.sendEvent(Unknown Source) 
    at org.eclipse.swt.widgets.Widget.sendEvent(Unknown Source) 
    at org.eclipse.swt.widgets.Display.runDeferredEvents(Unknown Source) 
    at org.eclipse.swt.widgets.Display.readAndDispatch(Unknown Source) 
    at org.pentaho.di.ui.spoon.Spoon.readAndDispatch(Spoon.java:1183) 
    at org.pentaho.di.ui.spoon.Spoon.start(Spoon.java:6966) 
    at org.pentaho.di.ui.spoon.Spoon.main(Spoon.java:567) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.pentaho.commons.launcher.Launcher.main(Launcher.java:134) 
Caused by: org.pentaho.di.core.exception.KettleDatabaseException: 
Exception while loading class 
org.gjt.mm.mysql.Driver 

    at org.pentaho.di.core.database.Database.connectUsingClass(Database.java:423) 
    at org.pentaho.di.core.database.Database.normalConnect(Database.java:352) 
    ... 50 more 
Caused by: java.lang.ClassNotFoundException: org.gjt.mm.mysql.Driver 
    at java.net.URLClassLoader$1.run(Unknown Source) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.net.URLClassLoader.findClass(Unknown Source) 
    at java.lang.ClassLoader.loadClass(Unknown Source) 
    at java.lang.ClassLoader.loadClass(Unknown Source) 
    at java.lang.Class.forName0(Native Method) 
    at java.lang.Class.forName(Unknown Source) 
    at org.pentaho.di.core.database.Database.connectUsingClass(Database.java:414) 
    ... 51 more 

如果我使用SQLite作爲我的連接類型的作品，但沒有數據返回時，我去探索它。所以我的問題是我如何讓MySQL工作或使用SQLite獲取數據？

我是否缺少圖書館或班級？

Answer 1

原來我會丟失一個名爲mysql-connector-java-5.1.2.jar的類，我將它添加到該文件夾​​中（C：\ Program Files \ pentaho \ design-tools \ data-integration \ lib）使用MySQL連接，我的數據和表格出現。

Answer 2

缺少驅動程序文件。

這個錯誤對於剛開始使用PDI的人來說非常普遍。

驅動程序進入\ pentaho \ design-tools \ data-integration \ libext \ JDBC for PDI。如果您在Pentaho套件中使用其他工具，則可能需要將驅動程序複製到這些工具的其他位置。作爲參考，這裏有一些其他設計工具相應的文件夾：

• 匯聚設計師：\ Pentaho的\設計工具\聚集設計師\ DRIVERS
• 元數據編輯器：\ Pentaho的\設計工具\元數據編輯器\ libext \ JDBC
• 報表設計器：\ Pentaho的\設計工具\報告設計師\ LIB \ JDBC
• 架構工作臺：\ Pentaho的\設計工具\架構工作臺\ DRIVERS

如果這個轉型或工作會在測試或生產服務器等其他框上運行，不要忘記在部署注意事項中包含複製jar文件並重新啓動PDI或Data Integration Server。

Answer 3

我試圖從Pentaho查詢MySQL數據庫時遇到了同樣的問題。

錯誤連接到數據庫[本地MySQL數據庫]：org.pentaho.di.core.exception.KettleDatabaseException： 錯誤嘗試連接到數據庫發生

異常而加載類 org.gjt .mm.mysql.Driver

通過@擴大後user979331的解決方案是：

1. 下載的Latest MySQL Java Connector/Driver
2. 解壓的ZIP文件（對我來說這是mysql-connector-java-5.1.31.zip）

3. 副本的的.jar文件（mysql-connector-java-5.1.31-bin。罐子）和粘貼它在你的庫文件夾：

   PC： C：\ Program Files文件\ Pentaho的\設計工具\數據集成\ lib中

   的Mac： /應用/ data-integration/lib

重新啓動Pentaho（數據集成）並重新測試MySQL連接。

Answer 4

除了這裏其他的答案，這裏是你如何能做到這在Ubuntu（14.04）：

sudo apt-get install libmysql-java

這將下載mysql-connector-java-5.x.x.jar到/usr/share/java/，我相信還會自動創建一個名爲mysql-connector-java.jar符號鏈接。從勺子

ln -s /usr/share/java/mysql-connector-java.jar /your/path/to/data-integration/lib/mysql-connector-java.jar